Keywords:
Microbiology.
;
Electronic books.
Type of Medium:
Online Resource
Pages:
1 online resource (653 pages)
Edition:
1st ed.
ISBN:
9783319568362
Series Statement:
Food Microbiology and Food Safety Series
URL:
https://ebookcentral.proquest.com/lib/geomar/detail.action?docID=4878059
DDC:
615.954
Language:
English
Note:
Intro -- Contents -- Virulence Book Introduction -- Part I: Foodborne Pathogens and Virulence Factors -- Advantages of Virulotyping Pathogens Over Traditional Identification and Characterization Methods -- Introduction -- Virulotyping Enterohemorrhagic E. coli -- Virulotyping Salmonella Serovars -- More Clinical Benefits to Virulotyping -- Conclusion -- References -- Varying Pathogenicity of Campylobacter jejuni Isolates -- Introduction -- Epidemiology and Transmission Routes of C. jejuni -- Strain Variability -- Molecular Virulence Mechanisms of C. jejuni -- Adhesion to Epithelial Cells -- Cellular Invasion -- Transmigration Across the Epithelial Barrier -- Intracellular Survival -- Interaction with Immune Cells -- Animal Infection Models -- Conclusions and Perspectives -- References -- Strain-Specific Virulence Differences in Listeria monocytogenes: Current Perspectives in Addressing an Old and Vexing Issue -- Omics Tools in the Determination and Characterization of Differences in Virulence Among Different Strains of Listeria monocytogenes -- Virulence-Related Genomic Sequences with Non-homogenous Distribution in L. monocytogenes -- Whole Genome Sequencing (WGS)-Based Insights on Virulence Differences Among L. monocytogenes Strains -- Strain-Specific Differences in Virulence:Insights from Epidemiological Investigations -- Recent Applications of Genotype Surveillance, Whole Genome Sequencing and Targeted Assessments to Identify L. monocytogenes Populations (Clones) Varying in Virulence Potential and Host System Tropism -- Challenges and Opportunities Regarding Determination of Hyper- and Hypovirulent Clones -- Experimental Evidence for Hypervirulent and Hypovirulent Clones with Different Invasiveness Potential, and Some Caveats on the Choice of Prototype Strains -- Are There Virulence Determinants Unique to Hypervirulent Clones? -- Conclusions.
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References -- The Listeria monocytogenes Triad for Success: Food Matrix, Stress Response and Virulence -- Introduction -- Food Production and Induction of Stress Responses -- Tolerance Responses that Influence L. monocytogenes Survival -- Heat Tolerance Response -- Cold Tolerance Response -- Osmotolerance Response -- Tolerance Response to Low pH -- Systems that Sustain L. monocytogenes Acid Resistance -- F1F0 ATPase Complex -- The Glutamate Decarboxylase Acid Resistance (GAD) System -- Arginine Deiminase (ADI) System and Thiamine -- Sensors and Regulators -- Oxidative Stress -- Bile Stress -- Cross-Adaptation -- The Relationship Between the Food Matrix, Stress Response and Virulence of L. monocytogenes -- Conclusions -- References -- Virulence Traits in the Cronobacter Genus -- General Overview -- Background to Cronobacter spp. -- Clinical Aspects of Cronobacter Infection -- Infection of the Gastrointestinal Tract: Necrotizing Enterocolitis (NEC) -- Infection of the Central Nervous System -- Bacterial Meningitis -- Mechanisms of Pathogenicity in Cronobacter spp. -- Attachment, Invasion and Translocation -- Attachment -- Invasion -- Translocation -- Role of OmpA in Cronobacter Invasion of Mammalian Cells -- Role of Cytoskeleton Rearrangement in Cronobacter Invasion -- Tight Junction Disruption -- Lipopolysaccharide (LPS) Endotoxin -- Enterotoxins and Type-Six Secretion Systems (T6SS) -- Outer Membrane Vesicles (OMVs) -- iNOS Production -- Apoptosis -- Cronobacter Plasminogen Activator (Cpa) -- Sialic Acid Utilization -- Iron Acquisition Gene System -- Hemolysins -- Capsule Production -- Flagella -- Superoxide Dismutase (SOD) -- Evading the Immune Response -- Various Putative Virulence Factors -- Conclusions and Future Perspectives -- References -- Factors Affecting Variation in Salmonella Virulence -- Introduction.
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Evolution of Salmonella Genus, Species and Subspecies -- Genetic Diversity within S. enterica Subspecies I, Serovars and Strains -- Gene Expression, Pathogenesis, and Virulence -- Concluding Comments -- References -- Shigella: Virulence Factors and Pathogenicity -- Introduction -- Type III Secretion System -- Genetics of the T3SS -- Structure of the T3SS and Recognition of Secreted Effectors -- Regulation of the T3SS -- Adherence and Invasion -- Intracellular Motility and Intercellular Spread -- Host Immune System Manipulation and Evasion -- Innate Immune System Manipulation and Evasion -- Adaptive Immune System Manipulation and Evasion -- Shiga Toxin -- Shigella Pathogenicity Islands -- SHI-1 Locus -- SHI-2 Locus -- SHI-3 Locus -- SRL Locus -- SHI-O Loci -- Drug Resistance -- Concluding Remarks -- References -- Alterations in Shiga Toxin-Producing E. coli Colonization and Virulence Following Dietary Modulation and Administration of Antimicrobials -- Introduction -- Treatment of Human STEC Infection with Antimicrobials -- Treatment Considerations During the German 2011 E. coli O104:H4 Outbreak -- Effect of Dietary Alterations and Supplements on the Cattle STEC Reservoir -- Effect of Microbiota and Probiotics on Human Susceptibility to STEC Infection and Its Complications -- The Effect of Diet, Natural Compounds, and Zinc on Human STEC Infection -- Summary -- References -- The Role of Alternative Sigma Factors in Pathogen Virulence -- Introduction -- Characterization of Sigma Factors -- Sigma Factor Families -- Role of Sigma Factor in Recognition of Promoters During Transcription -- Alternative Sigma Factors of Gram-Positive Bacteria: Their Regulation and Role in the Pathogenesis of Foodborne Pathogens -- Bacillus subtilis σB -- Bacillus cereus Alternative Sigma Factors -- Listeria monocytogenes Alternative Sigma Factors.
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Staphylococcus aureus Alternative Sigma Factors -- Sigma Factors of Relevant Clostridial Foodborne Pathogens -- Alternative Sigma Factors of Gram-Negative Bacteria: Their Regulation and Role in the Pathogenesis of Foodborne Pathogens -- RpoS in Gram Negative Foodborne Pathogens -- Transcriptional Regulation of rpoS -- Translational Regulation of RpoS -- RpoS Stability -- Additional Sigma Factor Regulation -- The Role of RpoS in Salmonella -- The Role of RpoS in Shigella -- The Role RpoS in E. coli -- The Role of RpoS in Yersinia -- The Role of RpoS in Vibrio -- RpoE in Gram Negative Foodborne Pathogens -- Regulation of RpoE Activation -- RpoE and sRNAs -- RpoE and Salmonella enterica -- RpoE and Pathogenic Escherichia coli -- RpoE in Yersinia -- RpoE in Vibrio -- Other Alternative Sigma Factors in Gram Negative Foodborne Pathogens -- RpoH -- RpoH Regulation -- RpoH Regulon Members and Pathogenesis -- ClpXP and Type III Secretion Systems (T3SS) -- RpoN -- The Phage Shock Protein (PSP) Response -- PSP Response and Virulence -- FliA -- Campylobacter -- Conclusions -- References -- The Effects of Environmental Conditions and External Treatments on Virulence of Foodborne Pathogens -- Introduction -- Virulence in Microbes: Major Factors and Mechanism(s) of Action -- Virulence Factors and Pathogenicity Islands -- Virulence Regulation and Role of Stress Signals -- Effects of Environmental Conditions and External Treatment on Pathogen Virulence -- Temperature -- Irradiation -- Desiccation and Osmotic Stress -- Pressure -- pH -- Biopreservatives -- Food Packaging -- Cross Protection by Stresses -- Conclusion and Future Directions -- References -- The Rise of Genomics and the Promise of Whole Genome Sequencing for Understanding Microbial Foodborne Pathogens -- Introduction.
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Whole Genome Sequencing: A New Way Forward to Understanding Foodborne Pathogens and Associated Contamination Events -- The GenomeTrakr: An Engine for Foodborne Pathogen Genome Collection -- The Application of Phylogenetics in Molecular Epidemiology (Suggest Providing a Glossary for Terms Such as Phylogenetics) -- Genomics Predicts Bacterial Pathogen Phenotypes -- Antimicrobial Resistance Typing by Whole Genome Sequencing -- Virulence Profiling and Other Important Phenotypic Predictions Using WGS Data -- The Evolutionary Context of Nucleotide Substitutions Within the Pathogen Genome -- Whole Genome Sequencing Benefits Several Sectors of the Food Industry -- International Considerations and the Global Rise of Food Safety Genomics -- Summary and Conclusions -- References -- Web Tools and Databases -- Part II: Foodborne Pathogens, Host Susceptibility, and Infectious Dose -- Host Innate Immune Factors Influencing Enterohemorrhagic Escherichia coli Pathogenicity -- Introduction -- The Host Response to EHEC Infection -- Inflammation and Cell Death Signaling -- Pathogen Response to the Host: Inflammation -- Inhibition of NF-κB Signaling -- Inhibition of MAPK Signaling -- Pathogen Response to the Host: Apoptosis -- Effectors that Induce Apoptosis -- Inflammasomes and Immunity to A/E Pathogens -- Conclusions -- References -- In Defense of the European 100 CFU of Listeria monocytogenes/g in Ready-to-Eat Foods -- Listeriosis -- Taxonomy -- Listeria monocytogenes Foodborne Illness -- Foods Implicated -- Control of L. monocytogenes in Foods -- History of Criteria Relating to Listeria monocytogenes in Foods -- European Commission Regulation 2073/2005 on Microbiological Criteria for Foodstuffs -- Historical Data -- Outbreak and Scientific Data -- Predictive Mathematical Modelling -- Challenge Testing -- Shelf-Life Testing (Durability Studies).
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International Work Complimentary to the European 100 CFU/g L. monocytogenes in Ready-to-Eat Foods.
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